Continuous filter for slimes, sands, &amp;c.



PATENTED DEC. 25, 1906.

E. S. HUNTLBY.

CONTINUOUS FILTER FOR SLIMES, SANDS, 6cm.

APPLICATION FILED OGT.21. 1905,

3 SHEETS-SHEET 1.

\NV ENTOR.

No. 839,591. PATENTED DEC. 25, 1906. E. S. HUNTLEY.

CONTINUOUS FILTER FOR SLIMES, SANDS, 6w.

APPLICATION FILED 00121, 1905.

3 SHEETS-SHEET 2.

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No. 839,591. PATENTED DEC. 25, 1906. E. S. HUNTLEY.

CONTINUOUS FILTER FOR SLIMES, SANDS, 6w.

APPLIOATION FILED OGT.21, 1905.

3 SHEETS-SHEET 3.

W\TNES$ES-. INVENTOR.

I P M TED STATES PATENT OFFICE.

CONTINUOUS FILTER FOR SLIMES, SANDS, 800.

Specification of Letters Patent.

Application filed October 21,1905. Serial No. 283,822.

To all whom it maly conccrmf Be it known that I, EarnSTAFronn HUNT- LEY,mine manager, a subject of the King of Great Britain and Ireland, and aresident of Burbanks Birthday Gold'Mine, Coolgardie, in the State ofWestern Australia, in the Commonwealth of Australia, have invented acertain new and useful Improved Continuous Filter for Filtering Slimes,Sands, and

other Similar'Material and for Separating Solutions from SuspendedSolids or Precipitates, of which the following is a specificatlon.

My invention is designed for the treatment of auriferous or othermaterial which requires to be subjected to the process offiltratron-such as slimes sands, tailings crushed mills, and solutionscontaining suspended solids or precipitates-for the purpose ofseparating auriferous or other solutions from the solids or preci itatedmaterials. The filtration is efi'ecte by means of air which is appliedunder pressure for this purpose.

The filter consists of a wheel or cylinder which is suitably grooved onits periphery to admit of the'passage of liquids, such grooves beingconnected with passage or channels which carry. the separated liquids tothe outside of the apparatus, such passages being connected to a valvewhich automatically closes the passages at regulated intervals. Theperiphery of the filter-wheel is covered with a suitable filteringmaterial, referably a cloth fabric, over which is, stretc ed a finemetallic screen. The periphery of the wheel is divided into sections,and the filterin material and the grooves are also divide into sectionsby grooves which are cut across the periphery, into which ooves bars areclamped and bolted. These bars divide the periphery of the wheel and thefiltering ma- ,terial, portions of which are held in above grooves bythese bars, and the grooves which are intended for the passage ofliquids into sections, each section bein connected with a passage whichconveys t e filtered liquid away.

The filter-wheel constructed as described above is made to revolve in anair-tight vessel, into which vessel air under suitable pressure isadmitted, and as the liquids exude through the filtering material theyflow into from their respective channels, which channels are connectedwith mechanism by which the discharge is controlled.

My invention also includes appliances for, if necessary, washing thesoluble salts .from or applying solution to the solids which collect onthe filtering material, and also mechanism by which such solids may beremoved from the filtering medium and discharged from the apparatus. T

Figure 1 1s a sectional view'of the apparatus, showin the filter wheelor cylinder and the air-tig t chamber inwhich the wheel revolves and thesubsidiary appliances in connection therewith. Fig. 2 is a sectionalview through lines X X, shown on Figs. 1

and 3. Fig. 3 is a sectional view through.

lines Y Y, shown on 1 and 2. Figs. 4 and 5 are views showing the detailof construction of the rim of the object and the method of securing thefiltering material thereto.

A is the filter wheel or cylinder, which is made of iron. I

' B re resents the grooves and solutionchannel round the outer surfaceof the wheel. C 'is the filtering medium covering these grooves andchannels.

Drepresents the rings, of iron, in sections, which are bolted to thewheel and hold the outer edges of the filter-cloth or medium inposition. A

E re resents the grooves which are cut across t e surface of the wheeland the bars of iron therein, which are bolted into these groovesanddivide the filtering material and the outer surface of the wheel intosections.

F represents the pi es forrning the'lpassa es connected with t e groovesand canne s under the filtering material on the one end and with a valveon the other end for carrying the filtered liquid to the outside of theapparatus.

G s a valve which with the revolution of the wheel automatically opensand closes the passages.

H is an outlet-passage through the valve for the filtered liquid.

I is the air-tight steel chamber inclosing the wheel and in which thewheel revolves.

J is a division in the chamber to se arate the=material which has beentreate :from that which awaits treatment.

Patented Dec. 25,1906.

K is a pipe through which the sludge or material tobe treated is fedinto the appa ratus. a i

L is a 'scra er by which the solids which have collecte and adhere tothe filter-wheel are removed.

-M is an agitator into which the solids fall and where they are mixedwith sufiicient liquid to cause them to flow freelg.

N is an outlet-pipe through w ich the solids are carried off anddischarged. 0 is a regilating-cock to this outlet-pipe.

is a tank into which the wash-water is pumped.

R represents pipes spraying the Washwater or solution onto the solidswhich have collected on the filter-wheel.

S is a pipe through which the compressed air is admitted under thenecessary pressure to effect filtration.

I will now explain the method of working my a aratus. The filter-wheelis caused by suitab e mechanical means to revolve slowly and thematerial to be treated is forced continuously'throu h the pipe K intothe airtight chamber Air under the necessary pressure is admitted to theinside of th1s chamber through the pi e S, and this pressure forces theliquids through the filtering material, through the grooves B, throu hthe pi s F forming the passages, throug h the ves 6%, to the outlet-pipeI-I. Meanwhile the solids or precipitates collect on and adhere to thefiltering material, and these solids are, if necessary, washed by meansof sprays through the pi es R. Such washings pass to the outside 0 theapparatus through the above-mentioned passages. The revolving of thewheel causes the valve G to automaticall close the outlet of thepassages F at a regu ated point, and the pressure thus becomes equalizedon either side of those sections of the filtering material from whichthe discharge hasbeen closed and on either side of the solids collectedon those sections. As

the wheel continues to revolve and while the valve G is closed thescraper .L removes these collected solids, which solids fallinginto thereceptacle below are mixed b the agitator M with a suflicient 'quantitofiigpsid to enable them to pass off throu the charge-pipe N. As t ewheel revo ves further the valve G automatically opens, when the abovecycle of operations is continued. The above-described process ap liesseverallyto each section into which tl ie periphery of the filterwheelis divided.

Having fully described and ascertained-my invention What I claim as new,and desire to secure by Letters Patent, is

1. A filtering apparatus comprising an airtight chamber, a rotary membertherein having filtering material on. its outer surface,

means for su plying air under ressure to said chamber am means for withrawing the filtered material from the said rotary member.

2. A filtering apparatus comprising an air-,- tight chamber, a rotarycylinder therein having grooves on its periphery and filtering materialcovering said grooves, pi es leading from said grooves for carrying ofl'izhe filtere material, and means for introducing air u.n-

der pressure to said chamber.

3. A filtering apparatus com rising an airtight casing, a rotarycylinder t erein having grooves on its periphery and filtering materialcovering said grooves, means for carrying off, the filtered materialfrom the grooves, means for introducing air under pressure to thechamber, a scraper cooperating with the cylinder, means for sprayingwater over the periphery of the cylinder, a chamber for receivmg thesolids from the scraper, an agitator in said chamber and adischarge-pipe from said chamber.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

ERLE STAFFORD HUNTLEY.

Witnesses F. C. Cunwoon, Tom HOLLINS.

